num_01=9     #不可变类型
list1=[5,3.41,"蜡笔小新"]   #可变类型
def func1(x):
    print(id(x))
    x=5
    print(id(x))
    pass
def func2(ls):
    print(id(ls))
    ls.append(9)
    print(id(ls))
    pass
# print(id(num_01))
# func1(num_01)
print(id(list1))
func2(list1)